Hammer for beating leaf metal.



No. 814,003. PATENTED FEB. 27, 1906. H. B. GRABAU.

HAMMER FOR HEATING LEAF METAL.

APPLIUATION FILED MAY 1. 1905.

2 SHEETS-SHEET 1 I h 9 1 A e Mlness es.- 9' lrwenr M, m. a

No. 814,003. PATENTED FEB. 2'7, 1906. H. E. GRABAU.

HAMMER FOR BEATING LEAF METAL.

APPLIGA'I'IGH FILED MAY 1. 1905.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed May 1, 1906. Serial No. 258,246.

To all whom it may concern:

Be it known that I, HANS E. GRABAU, a citizen of the United States, residing at New York city, Brooklyn, county of Kings, and State of New York, have invented new and useful 1m rovements in Hammers for Beating Leaf Ietal, of which the following is a specification.

This invention relates to a hammer more particularly ada ted for beating leaf metal, though it may a so be used for different purposes.

The invention consists, essentially, in interposing a yielding buffer or cushion of the construction hereinafter described between the hammer-actuating cross-head and the means for suspending the hammer from said cross-head. These buffers serve to take up the impact from the stroke and are not apt to be quickly destroyed by the severe pounding to which they are subjected.

In the accompanying drawings, Figure 1 is a front elevation of my im roved hammer; Fig. 2, a side view thereo Fig. 3, a horizontal section on line 3 3, Fig. 1; Fig. 4, a detail of the hammer-supporting rollers and lower buffers; Fig. 5, a detail showing the connection between cross-head and levers, and Fi 6 a detail of the upper buffers.

The frame of the machine is com osed of two parallel side plates a, connected Y horizontal beams a, to which they are bolted at c Within bearings 0, turns the power-shaft b, carrying loose and fast pulleys b b and crank-disk 6 The belt-shifter may be operated by a treadle 0'.

Along u right rails a of plates 0. moves a slide 01, W ich is reciprocated by a disk 5 The connection between the parts (1 and b is effected by a sectional link, the u per mem her I) of which is pivoted to disk 3 by wristpin 6 while its lower member d is pivoted to slide d at d. The parts b d are connected b a clamp-screw d passing through a slot d 01 member d, so that the length of the link may readily be changed. From slide at projects forwardly a erforated block (i through which passes a orizontal bar e, clamped thereto by screw 2. U on each end of bar 6 is mounted an angular a utment or bracket f, which is perforated for the reception of the bar. The slide d, bar 2, and brackets f collectively form the cross-head that actuates the hammer-head. The upper member of bracket f is forked to grasp a lever g, hinged thereto at g. The lower biurcated arms g of levers g embrace rollers h, journaled in bearings 71/, which are supported b I levers g. Around the rollers h passes an endless belt i, from which the hammer-head j is suspended, the latter being perforated for the passage of the belt. To guide the hammer, it is provided with grooved flanges 9", that engage rails a.

Through the levers 9 pass screws lc, the inner ends of which bear against sockets Z of holders Z. These holders sup ort rubber blocks or resilient buffers m, w rich are interposed between the holders, and consequently between the levers g and the lower arms of brackets The butters will take up the strain during the o eration of the hammer and will not be lialdle to be quickly destroyed by the severe shocks to which they are subjected.

To assist the buifers m, the bearings h may be made slidable in boxes 9 of arms 9 while lower buffers n are interposed between the bearings and the boxes. To further relieve buffers m, rods 0, extending inwardly from upper arms of levers g, straddle boxes p, formed on the outer ends of rods p, which are pivoted to slide (1 at To the forked ends of rods 0 are bolted earings p slidable in boxes Upper resilient buffersq are interposed between the bearings p and the boxes p.

It is evident that either the first, second, or third set of buffers or any two of such sets may be omitted without departing from the s irit of my invention. By lengthening or shortening the adjustable link b d the a preach of the hammer toward the wor table 2" may be adjusted.

What I claim is 1. A hammer for beating leaf metal rovided with a cross-head having angular a utments, levers pivoted thereto, means for suspending a hammerhead from the levers, setscrews engaging the levers, holders engaged by the set-screws, and buffers supported by the holders and adapted to engage the abutments, substantially as specified.

2. A hammer for beating leaf metal provided with a slidable cross-head, levers ivotcd thereto, bearings slidably supported by the levers, rollers journaled in the bearings, a belt surrounding the rollers, a hammer-head suspended from the hell, and resilient hull'ers between the hearings and the levers, substantially :Ls speeilied.

3. A hammer lei. healing leaf metal provided with u guide ay and slidehle eress head guided thereby, levers pivoted thereto and having upwerrlly-extem|ing arms, a belt eenneeted to the lower free ends of the levers, n hmnlner-heml suspended from the hell, and

resilient huITers between the cross-head and I0 the upwardly-extending lever-arms, snbstam tially as specified.

Signed by me at New York city, (Manhatmn,) New York, this 29th day of April, 1905.

HANS E. GRABAU. \Vitnesses:

\VILLIAM Senurz, FRANK v. BRIESEN. 

